补充材料！！！！

littlebluesk · 发表于 2003-9-3 06:05:00

83 At the time of the Mexican Agrarian revolution, the most radical faction, that of Zapata and his followers, proposed a return to communal ownership of (land, to what had been a pre-Columbian form of ownership respected by the Spaniards.)

正确答案是a，但是我不太了解 to what 这种结构。谁给讲讲？

85 According to United States Air Force officials, a cannon (shooting dead chickens at airplanes has proved helpful to demostrate) what kind of damage can result when jets fly into a flock of large birds.

d:that shoots dead chickens at airplanes proves itself helpful to demonstrate
e:that shoots dead chickens at airplanes has proved helpful indemonstrating

我选的d,答案选e, 不懂为什么用完成时。

anchoret · 发表于 2003-9-3 13:55:00

to what 表示与to communal ownership of land 是同位语

be helpful (in) doing, 不用to do
时态上proves过于强调这个shoot一直存在

littlebluesk · 发表于 2003-9-4 07:20:00

thank you very much, xiao an

anchoret · 发表于 2003-9-4 09:32:00

以后请在发贴主题上写上题号，便于他人查询，谢谢。

补充材料！！！！

补充材料！！！！

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